De partibus corporis humani sensibilibus et irritabilibus.

Glisson in 1677 had introduced the concept of “irritability” as a specific property of all tissues. Haller, in the above work, recorded his experimental proof of this, and distinguished between nerve impulse (sensibility) and muscular contraction (irritability). English translation, including preface by Simon André Tissot from the French translation, as A dissertation on the sensible and irritable parts of animals, London: J. Nourse, 1755. This includes a supplement by Haller and his "Essay on the cause of the motion of the heart." Abbreviated translation in Bull. Hist. Med., 1936, 4, 651-99.
Digital facsimile of the 1755 translation from the Internet Archive at this link.

(Thanks to Malcolm Kotter for information regarding the English translations of this entry.)